These are "AA" graded black tourmaline stones that have a deep jet-black color, little to no surface deposits, and feature a highly stable crystal structure, unlike other varieties which can cause flaking and splintering. Ethically sourced from Madagascar. Provides a grounding path for Light to enter the Earth plane. This ally helps one disengage from obsessive or compulsive behaviors and release chronic worry and anxiety. Ideal stones of psychic protection for anyone that works in challenging environments or circumstances. Aides in clearing aura fields of imbalance. Acts as a vacuum cleaner by clearing oneself and one's surroundings of negativity and disharmony. Recommended for ridding oneself of negative thoughts, anxiety, anger, and ideas of unworthiness. Highly powerful stone for those that want a cloak of protection. Approximate size: 1-2 inches. Chakra: Root Affirmation: I banish all negative attachments, within and without. I am purified, grounded, and centered upon the Earth. Ways to use your crystals: Meditate with your stones, carry them with you in a bag or purse, place it in an area of your home you frequent. Disclaimer: We do not believe crystals are a substitute for conventional medical or psychological treatment, but as a complementary therapy in addition to these treatments. We feel that crystals can complement other therapies and support our overall well-being. Crystals should be used with the understanding that it is part of a holistic treatment plan and NOT a replacement.